Try updating to the latest kernel-xen, -- Robin
On Thu, May 22, 2008 at 1:26 PM, Matthias Saou < [EMAIL PROTECTED]> wrote: > Hi, > > I assume this is again due to the Xen version rebase, same as with the > 5.0 to 5.1 update : After updating a Xen server (dom0) to RHEL 5.2 > without rebooting on the newer kernel, some Xen related operations > start to fail. > > Currently, I'm unable to start any guests (domU), and the behavior is > not really helpful : "xm create -c foo" just hangs for a while and > exits with the error : > > Error: Device 0 (vif) could not be connected. Hotplug scripts not > working. > > In the xend-debug.log I have these two lines : > > sysctl operation failed -- need to rebuild the user-space tool set? > sysctl operation failed -- need to rebuild the user-space tool set? > > In the xend.log everything seems normal except the block devices : > > DEBUG (blkif:24) exception looking up device number for xvda: [Errno 2] > No such file or directory: '/dev/xvda' > DEBUG (blkif:24) exception looking up device number for xvdb: [Errno 2] > No such file or directory: '/dev/xvdb' > > This is quite annoying, as it causes problems which might go undetected > for months (years?) and will bite at the worst possible moment : When a > guest crashes and needs to be restarted... > > I wouldd really like to see some improvements to Xen is backwards > compatibility regarding the kernel/userspace duo in dom0, as to "fix" > this issue, if a reboot isn't possible (as other critical domUs might > be running), a simple downgrade of the userspace xen tools might do the > trick. So how hard would it be for the new tools to have the old > behaviour if the old kernel is found? > > FWIW this is a server running 2.6.18-53.1.14.el5xen x86_64 and always > fully updated with the latest available RHEL5 updates. It's currently > running 11 domUs. > > Matthias > > -- > Clean custom Red Hat Linux rpm packages : http://freshrpms.net/ > Fedora release 8 (Werewolf) - Linux kernel 2.6.24.5-85.fc8 > Load : 0.36 0.16 0.21 > > _______________________________________________ > rhelv5-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/rhelv5-list >
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